ANYL 171 |
| Several techniques have emerged for the routine production of nanoscale patterns, however, most are prohibitively expensive and require extremely complex equipment to perform repeatedly. Near field phase shift photolithography (NFPS-PL) is an interference-based optical patterning technique that can generate high fidelity patterned nanostructures with sub-100nm dimensions using widely available low resolution photolithographic systems, and in some cases, even without the use of complex optical systems. The resulting patterns are potentially extremely useful to prepare subwavelength optical components. An area of device engineering that has become extremely important is the fabrication of patterned magnetic nanostructures due to their particular applications in ultradense data storage and magnetic/photonic device architectures. In our work, we are using patterns of magnetic metals generated through single and multi-pass NFPS-PL as directing templates for magnetic composites and novel materials. Cobalt, nickel, and other magnetic materials deposited into the NFPS-PL-derived patterns can produce arbitrarily designed magnetic structures with nanometer-scale feature sizes and spacing. We will describe our work to produce these patterns, including considerations of the potential geometries that are routinely attainable. In addition, we have used such patterns to direct the organization of novel magnetic materials and composites into reproducible, long-range, structured arrays. We will present data on the characterization of the magnetic and structural properties of the arrays, the interaction of the templated materials with the patterns and each other, and the reproducibility of the approach under varying conditions. Our discussion will also include potential applications of these arrayed novel materials in photonic, electronic, and microfluidic systems. |
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Directed Assemblies Using Surface Templates
8:25 AM-12:05 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 335, Oral
Division of Analytical Chemistry |